Metal-working machine



June 24, 1930.

H. G; KELLOGG METAL WORKING MACHINE Filed Aug. 9, 1926 3 Sheets-Sheet June 24, 1930. H G, KELLQGG 1,767,289

METAL WORKING MACHINE Filed Aug. '9. 192e 3 Sheets-sheet 2 vwentoz June 24, 1930. H. G. KELLOGG METAL WORKING MACHINE 5 Sheets-Sheet 3 Filed Aug. 9, 1926 Patented .im 24, l1930 UNITED'` STATES PATENTv OFFICE HOMER G. KELLOGG, 0F DETROIT, MICHIGAN, ASSIGNOR TO MOTOR PRODUCTS (70B-4 i POBATION, OF DETROIT, MICHIGAN, A CORPORATION OF NEW YORK METAL-WORKING autoritair.'r

appueaiion .mea August a, 192s. serial No. 128,249.

This invention relates to metal working machines and more especially to means for imparting a predetermined longitudinal contour to the molding orvother strips operated upon and further to means for automatically starting and stoppingthe apparatus, at the completion of each operation.

`The invention relates more especially to machines of this general character in which strips of predetermined length are adapted to be operated upon and which are designed to have imparted thereto a predetermined longitudinal contour and to coordinatewthe several operations of the apparatus this invention contemplates means operated bythe strip for controlling the starting and stopping` of the apparatus. l

. The several objects, advantages and novel details of construction of this invention will be made more apparent as this description proceeds, especially when considered in connection `with the accompanying drawings y wherein;

--; Figure 1 is a fragmentaryside elevational view of amachineconstruct'ed in accordance with this invention.

Figure 2'is an end elevational view of the structureshown in Figure 1 as seen from the left.

Figure 3 is -an enlarged fragmentaryview showlng certain details of construction and Figure 4 is a fragmentary plan view.

- Referring now particularly to the drawings wherein like.reference characters indicate like parts, it' will be noted that the machineincludes a frame 10 upon which are mounted ra plurality of driven guiding or forming rolls or both 11 whereby the strip being operated on is advanced through the machine toward the left as viewed in. Figure 1 whereupon a strip of the desired cross sectional coniguration may be evolved from a flat strip if a pluralityf forming rolls are employed or a strip preformed to the desired cross sectional configuration uidingly advanced through the machine. t will beobvious as this description proceeds that the invention is applicable with e ual facility and corresponding utility to mac ines wherein a strip of predetermined cross section is iguidingly advanced or wherein astrip is rst formed to a predetermined cross sectional area and then bent to the desired 1ongitudinal contour.

Arranged adjacent the end of the table or bed 10 of the machine is a pair of rolls 12 and 13, the roll 13 being mounted about a fixed axis 14 while the roll 12 is rotatable about the axis 15 the bearings of which are formed in blocks lfcarried upon frames 17. Obviously a frame '17 is arranged at each end and these frames are oscillatably mounted on the axis 14 of the lower roll 13. rocked or oscillated about the pivot or axis 14 for imparting to the strip S the predetermined longitudinal contour.

For rocking the frame member 17 and consequently the roll 12 I provide a mechanism which includes a rod or extension 18 projecting forwardly from the frame 17 and pro- The upper roll 12'is adapted to be' vided with a cam engaging extension 19 f preferably adjustably connected thereto by means of a bracket 20. -The lower end 21A of the extension 19 is adapted to engage the peripheral face of a cam 22 loosely mounted upon a shaft 23. The shaft 23 is normally constantly rotating, being driven from a source of power (not shown). Keyed to the shaft 23 for rotation therewith is a ratchet or clutch wheel 24 with which a laterally'movable clutch member 25 is adapted Ato engage. A spring 26 normally urges the clutch member 25 into engagement with the clutch wheel 24 but the action of this spring is opposed by a bell crank lever 27 pivotally secured to the cam 22 as at 28, one arm of which is adapted for engagement under a pin 29 extending laterally from the4 clutch 25 downwardly whereby it engages clutchA scribed is as follows: As the strip is advanced through the machine its forward end engages the target 34 as suggested in 'Figure 4 and owing to the inclination thereof rocks 5 lever 31 about its pivot 32 in a lateral or transverse direction so as to disengage the lateral or hook-shaped end 30 from behind the arm 36 of bell crank lever 27 This permits spring 26 to force the clutch member wheel 24, which is constantly rotating together with shaft 23, thereby locking cam wheel 22 to the shaft 23 for rotation therewith. Thus the cam 22 is rotated, the lever 31 being held in this inoperative osition by reason of the engagement of t e strip S with the target 34. However, a spring 35 having its end secured respectively to the end of the lever 31 and the bed of the machine 10 tends to rock this lever back to its normal position wherein the laterally eX- tending end is in the path of the arm 36 of the bell crank lever 27. Thus when the strip S has passed ,beyond the target 34 5 spring 35 will return the lever 31 to its normal osition so as to osition the end 30 oithis lever in the pat of ar'm 36 of bell crank lever 27 when this cam control lever has been 'brought again substantially in the position illustrated 1n Figure 3 by reason of the rotation of the cam 22:' Hence the arm o rotation of this cam as the end of the strip passes froml between these rolls. Thus the period of operation'of this part of the machine is dependent upon the length of the strip being o erated upon and in the embodnnent of t e invention herein shown this period is suicient to permit one complete .rotation of the cam 22. Obviously however, the length of the period of operation may he such as to only permit of a partial rotation of the cam- 22 or of several complete rotations thereof as the character of the job being performed dictates.

The peripheral configuration of the cam 22 is so selected that it Williimpart to the Y frames 17 .and consequently "to the upper .roll 12 a rocking movement about the lower fixed roller 13 so as to bend the strip S to the desiredlongitudinal contour which in the present embodiment of the invention involvesa shape substantially as spggested in dotted lines in Figure `1. As w1ll be noted he strip Shas been bent into'twojreverse curves and for this purpose the upper roller 12 is first rocked to the left as seen'in Figures 1 and 3 and then to the right oa line workpiece the desired longitudinal contour,

it being obvious that where the periphery of the cam is concentric with the axis of the rotation that dwell portions will be prbvided to produce straight or non-curved portions in the workpiece S.

'Vhile lthe structural details of the embodiment of the invention herein shown and described are found to give particularly good results in practice nevertheless it will be immediately obvious to those skilled in this art that various changes may be made in many of the essential and all of the nonessential details of the invention as may be foundnecessary or expedient and to this end reservation is made to make such changes as may come within the purview of the accompanying claims. I -i What I claim as my invention is:

1. The combination with means for advancing a molding strip or the like, of a pair of rolls engaging opposite sides of said strip and means for oscillating one of said rolls about the axis of the other roll to bend said strip to a predetermined longitudinal contour. n 2. The combination with means for advancing and for fashioning to a predetermined longitudinal contour a molding strip or the like, of means for actuating said fashioning means and means operated by saidstrip and mechanically connected to said actuating means for controlling the same to control the said fashionng means.

3. The combination with means for advancing a. molding strip, of a pair of rolls engaging said strip, means for oscillating one of said rolls for fashioning said strip longitudinally and means controlled b said strip for controlling said roll oscil ating means.

4. In a machine of the character described, the combination with means for lon 'tudinall fas 'oning a molding strip or t e like, o a camjfor actuating said fashioning means, a clutch member carried by said cam for actuating the same and means operated by said strip and connected to said clutch for o -rating the same to control the operation o said cam.

-5. In a machine of the character described, I

means for advancing a strip and for longitudinally fashioning said strip, including a pairV of rolls'engaging said strip and means for oscillating one of-said rolls with reference t the other while maintaining its engagement with thesaid to b end said strip to the said predetermined longitudinal contour. Y

6. In a machine of the character'described, a pair ofrolls arranged for engagement with v opposite ksurfaces of a stri to be fashioned,

means for mounting one o said rolls for oscillation about the other and cam control means for oscillatin said roll.

7. In a machine o the character described, 10. a pair of rolls, means for oscillatably mounting one 'of said rolls, cam means for oscillating said roll and means controlled by the strip being operated upon for causing an operation of said cam.

8. The combination of means for'advancing a molding strip or the like, of meansfor fashioning said strip longitudinally, cam means for operatin said fashioningmeans, a clutch for contro 'ng said cam and means for controlling said cam by the strip being operated upon.

9. In a machine of the character described, constantly driven means for advancing a molding strip or the like, normally inactive means for longitudinally fashioning said strip and means controlled by the strip for operating said fashioning means.

10. In a machine of the character dscri-bed, means for advancingY a molding strip or the like, means ,for longitudinally fashioning said strip, cam means for o erating said fashioning means, a constant y operated driving means for said cam, a clutch for coupling said cam to said driving means and means controlled by the strip being operated upon lfor controlling -said clutch. f

11. In a machine of the character described, the combination with a roll movable in opposite directions to bend a strip in reverse directions, of means. including a cam periodically actuated by' said strip for con- .trclillling the direction of movement of said ro 12. In a machine of the character described, the combination with means operable to bend a strip in reverse directions, of

a normally inactive cam for controlling said for controlling the operation of bending means and .means actuated bythe path to control the bending y ,reverse directions, and means controlled by v fashioning a molding'strip or the like, of a cam for actuating said fashioning means, a clutch associated with said cam, and means operated by said strip and connected to said clutch for actuating the latter to control the operation of said cam.

17. In a machine of the class described, the combination with means for advancing and fashioning a molding strip, of a cam for actuating said fashioning means, al clutch for controlling the o eration of said cam,

and meansVA for actuatlng said clutch includf '9o ing a member connected to the latter and arranged in thepath of travel of said strip and operated thereby.

18. The combination of means for advancing and ashioning av molding strip or the like, and means operable by said strip for automatically .actuating said fashioning means to change the contour of said strip.

19. In a machine of the character described, apai-r of rolls, means for oscillatably mounting one of said rolls, a drive shaft, means including a cam freely'rotatably mounted upon the drive shaft for oscillating said roll and means for periodically connecting said cam to the drive shaft.

20. The combination of means for advancing and fashioning a molding strip or the like, and means arranged inthe path of travel of the strip and operable by engagement with the latter to automatically adjust 11o the fashioningmeans to change the'contour of said strip.

In testimony whereof I ailix my signature.

' HOMER G. KELLOGG. 

